Cobalt-manganese-phosphorus urchin-like nano wire hydrogen evolution catalytic material growing on carbon cloth

A technology of cobalt manganese phosphorus sea urchin and catalytic materials, which is applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high price, low storage capacity on the earth, and wide commercial application, etc. Effects of electrochemical impedance, abundant storage, and reliable electrochemical stability

Inactive Publication Date: 2019-09-20
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The precious metal platinum and platinum-based materials are the best catalytic materi

Method used

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  • Cobalt-manganese-phosphorus urchin-like nano wire hydrogen evolution catalytic material growing on carbon cloth
  • Cobalt-manganese-phosphorus urchin-like nano wire hydrogen evolution catalytic material growing on carbon cloth
  • Cobalt-manganese-phosphorus urchin-like nano wire hydrogen evolution catalytic material growing on carbon cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 10mM urea, 6mM ammonium fluoride, 1.6mM cobalt nitrate hexahydrate, and 0.4mM manganese sulfate monohydrate, dissolve these raw materials into 30mL deionized water, stir for 20 minutes under a magnetic stirrer, and mix thoroughly to form Mix the solution evenly, transfer the mixed solution into a container with polytetrafluoroethylene as the substrate, add the pretreated carbon cloth, and then put the container with polytetrafluoroethylene as the substrate into a stainless steel autoclave for hydrothermal reaction . The hydrothermal process was carried out in a blast drying oven with a set temperature of 120 °C and a holding time of 6 h. After the hydrothermal process was completed and cooled naturally, the precursor prepared by hydrothermal treatment was taken out, rinsed with ethanol and deionized water, and dried in an oven at a constant temperature of 60 °C for 6 h. The phosphating process is carried out in a tube furnace. Take a porcelain boat, place 0.4g of ...

Embodiment 2

[0033] Take 10mM urea, 6mM ammonium fluoride, 2mM cobalt nitrate hexahydrate, 0.5mM manganese sulfate monohydrate, dissolve these raw materials into 30mL deionized water, stir for 20 minutes under a magnetic stirrer, mix well, and form a uniform Mix the solution, transfer the mixed solution into a polytetrafluoroethylene-based container, add pretreated carbon cloth, and then put the polytetrafluoroethylene-based container into a stainless steel autoclave for hydrothermal reaction. The hydrothermal process was carried out in a blast drying oven with a set temperature of 120 °C and a holding time of 6 h. After the hydrothermal process was completed and cooled naturally, the precursor was taken out, rinsed with ethanol and deionized water, and dried in an oven at a constant temperature of 60 °C for 6 h. The phosphating process is carried out in a tube furnace. Take a porcelain boat, place 0.4g of sodium hypophosphite upstream, and place the dried precursor downstream. Then put th...

Embodiment 3

[0035] Take 12mM urea, 8mM ammonium fluoride, 2mM cobalt nitrate hexahydrate, and 0.5mM manganese sulfate monohydrate. Dissolve these raw materials into 30mL deionized water, stir under a magnetic stirrer for 20 minutes, mix thoroughly to form a uniform mixed solution, transfer the mixed solution into a container with a polytetrafluoroethylene substrate, and add the pretreated carbon Cloth, and then the polytetrafluoroethylene-backed container was placed in a stainless steel autoclave for hydrothermal reaction. The hydrothermal process was carried out in a blast drying oven with a set temperature of 120°C and a holding time of 8 hours. After the hydrothermal process was completed and cooled naturally, the precursor prepared by hydrothermal treatment was taken out, rinsed with ethanol and deionized water, and dried in an oven at a constant temperature of 60 °C for 6 h. The phosphating process is carried out in a tube furnace. Take a porcelain boat, place 0.4g of sodium hypopho...

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Abstract

The invention discloses a cobalt-manganese-phosphorus urchin-like nano wire hydrogen evolution catalytic material growing on carbon cloth. The preparation method comprises following steps: step one, hydrothermally synthesizing a precursor: weighing urea, ammonium fluoride, manganese sulfate monohydrate, and cobalt nitrate hexahydrate into deionized water, fully and evenly stirring to obtain a mixed solution, adding the mixed solution and preprocessed carbon cloth into a reactor, and carrying out hydrothermal reactions to obtain a precursor; and step two, generating the cobalt-manganese-phosphorus urchin-like nano wire hydrogen evolution catalytic material through phosphorization: preparing a porcelain boat, arranging sodium phosphate on the upstream of the porcelain boat, arranging the precursor on the downstream of the porcelain boat, finally, placing the porcelain boat in a tube furnace, introducing protective gas into the tube furnace, setting the program, and carrying out phosphorization to obtain the product. The provided material has a unique urchin-like nano wire structure, excellent hydrogen evolution catalytic activity, and extremely high stability, moreover, the raw materials are abundant, no precious metal is used, the repeatability is good, and the preparation method is simple.

Description

technical field [0001] The invention relates to a hydrogen evolution catalytic material, which belongs to the technical field of nanometer materials, in particular to a cobalt manganese phosphorus sea urchin-like nanowire hydrogen evolution catalytic material grown on carbon cloth. Background technique [0002] The shortage of fossil energy and the destruction of the ecological environment have always troubled us. As a perfect energy source with no pollution and high calorific value, hydrogen has been widely valued. Hydrogen production by electrolysis of water is a very important way to produce hydrogen, and efficient water electrolysis catalysts can save energy consumption. The precious metal platinum and platinum-based materials are the best catalytic materials, but their high price and low earth storage limit their wide commercial application. Therefore, it is very important to develop noble metal-free catalytic materials with high storage capacity, low price, excellent...

Claims

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Application Information

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IPC IPC(8): B01J27/187B01J35/02B01J35/10C25B1/04C25B11/06
CPCB01J27/187B01J35/0033B01J35/023B01J35/1004C25B1/04C25B11/04Y02E60/36
Inventor 张明杜相桓管继彪
Owner ZHEJIANG SCI-TECH UNIV
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